About a year ago, I replaced my 130 with a new 180. I did have problems with aptasia in the old aquarium. During the transition, I put all my rock in large Rubbermaid trash can with the lid closed and a powerhead, just to keep things moving. I didn't want the rock to dry out. It stayed there for 2 months. I expected die off, so I did a partial water change once during that period. The powerhead added a lot of heat, so that water got very warm. Within a month after moving the rock into the new aquarium, I had dozens, if not hundreds of the things.
Long story, but my point is that I believe they are almost indestructable. Almost. Two peppemint shrimp, one week and I haven't seen any since.